forked from M-Labs/artiq
109 lines
2.4 KiB
C
109 lines
2.4 KiB
C
#include <generated/csr.h>
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#include "exceptions.h"
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#include "rtio.h"
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long long int previous_fud_end_time;
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void rtio_init(void)
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{
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previous_fud_end_time = 0;
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rtio_reset_write(1);
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rtio_reset_write(0);
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}
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void rtio_oe(int channel, int oe)
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{
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rtio_chan_sel_write(channel);
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rtio_oe_write(oe);
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}
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void rtio_set(long long int timestamp, int channel, int value)
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{
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rtio_chan_sel_write(channel);
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rtio_o_timestamp_write(timestamp);
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rtio_o_value_write(value);
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while(!rtio_o_writable_read());
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rtio_o_we_write(1);
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if(rtio_o_underflow_read()) {
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rtio_o_underflow_reset_write(1);
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exception_raise(EID_RTIO_UNDERFLOW);
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}
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}
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void rtio_replace(long long int timestamp, int channel, int value)
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{
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rtio_chan_sel_write(channel);
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rtio_o_timestamp_write(timestamp);
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rtio_o_value_write(value);
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rtio_o_replace_write(1);
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if(rtio_o_underflow_read()) {
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rtio_o_underflow_reset_write(1);
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exception_raise(EID_RTIO_UNDERFLOW);
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}
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}
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long long int rtio_get_counter(void)
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{
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rtio_counter_update_write(1);
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return rtio_counter_read();
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}
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long long int rtio_get(int channel, long long int time_limit)
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{
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long long int r;
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rtio_chan_sel_write(channel);
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while(rtio_i_readable_read() || (rtio_get_counter() < time_limit)) {
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if(rtio_i_overflow_read()) {
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rtio_i_overflow_reset_write(1);
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exception_raise(EID_RTIO_OVERFLOW);
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}
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if(rtio_i_readable_read()) {
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r = rtio_i_timestamp_read();
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rtio_i_re_write(1);
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return r;
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}
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}
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return -1;
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}
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int rtio_pileup_count(int channel)
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{
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int r;
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rtio_chan_sel_write(channel);
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r = rtio_i_pileup_count_read();
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rtio_i_pileup_reset_write(1);
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return r;
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}
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#define RTIO_FUD_CHANNEL 4
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void rtio_fud_sync(void)
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{
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while(rtio_get_counter() < previous_fud_end_time);
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}
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void rtio_fud(long long int fud_time)
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{
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long long int fud_end_time;
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rtio_chan_sel_write(RTIO_FUD_CHANNEL);
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fud_end_time = fud_time + 3*8;
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if(fud_time < previous_fud_end_time)
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exception_raise(EID_RTIO_SEQUENCE_ERROR);
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previous_fud_end_time = fud_end_time;
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rtio_o_timestamp_write(fud_time);
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rtio_o_value_write(1);
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rtio_o_we_write(1);
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rtio_o_timestamp_write(fud_end_time);
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rtio_o_value_write(0);
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rtio_o_we_write(1);
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if(rtio_o_underflow_read()) {
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rtio_o_underflow_reset_write(1);
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exception_raise(EID_RTIO_UNDERFLOW);
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}
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}
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